VIOLACEOUS Meaning of VIOLACEOUS in English [ ˌvʌɪə'leɪʃəs ]■ adjective1》 of a violet colour. 2》 Botany referring to plants of the violet family (Violaceae).OriginC17: from L. violaceus (from viola 'violet') + -ous . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004